CN100460280C - Gas supply arrangement of a marine vessel and method of providing gas in a marine vessel - Google Patents
Gas supply arrangement of a marine vessel and method of providing gas in a marine vessel Download PDFInfo
- Publication number
- CN100460280C CN100460280C CNB2005800084504A CN200580008450A CN100460280C CN 100460280 C CN100460280 C CN 100460280C CN B2005800084504 A CNB2005800084504 A CN B2005800084504A CN 200580008450 A CN200580008450 A CN 200580008450A CN 100460280 C CN100460280 C CN 100460280C
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- CN
- China
- Prior art keywords
- gas
- boats
- ships
- ullage space
- gas tank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63J—AUXILIARIES ON VESSELS
- B63J99/00—Subject matter not provided for in other groups of this subclass
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C9/00—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2265/00—Effects achieved by gas storage or gas handling
- F17C2265/03—Treating the boil-off
Abstract
Gas supply arrangement (1) of a marine vessel (6) being adapted to carry liquefied gas in its gas tank (4) having an ullage space section (4.1) and a liquid phase section (4.2), which arrangement provides the gas for demands of the vessel, the arrangement comprising: a gas supply line (2) provided for delivering the gas formed in the gas tank to a consumption device (5); a piping (3.1) extending from the liquid phase section (4.2) to the ullage space section (4.1) of the gas tank (4) being provided with at least a pump (3.1), for introducing gas into the ullage space section. The piping is provided with a heat transfer unit (3.6) for effecting on the temperature of the introduced gas. Invention relates also to method of providing gas in a marine vessel (6) with liquefied gas tank.
Description
Technical field
The present invention relates to a kind of gas feeding apparatus of boats and ships, and the method that gas is provided in the gas feeding apparatus on a kind of boats and ships.
Background technology
Because gas itself burns and low discharging efficiently, it is favourable using on boats and ships as the gas of the energy.Usually gas is to store under liquefaction, because desired storage space is less under the liquefaction.
The propulsion system of liquefied natural gas (LNG) oil tanker utilizes shipload that power is provided usually.The storage of gas utilizes adiabatic cargo tank to arrange on the oil tanker, in adiabatic cargo tank, forms ullage space partial sum liquid phase part.Pressure in the cargo tank approaches atmospheric level, and the temperature of liquefied gas is approximately subzero 163 ℃.Though very good of the adiathermancy of cargo tank, raising gradually of liquefied natural gas temperature still can cause the formation of so-called spontaneous evaporation gas.These boil-off gas must be removed, and are excessive to avoid pressure in the cargo tank to raise, because cargo tank is highstrung for the variation of pressure.The consumer that these boil-off gas can be used for oil tanker is for example in the propulsion system.Yet the total amount of spontaneous evaporation gas is not sufficient to provide entire environment needed whole promotion energies, so steamer must have extra device to obtain extra gas, promptly so-called forced evaporation gas.
For example, shown a kind of equipment in patent disclosure FR 2722760, in this equipment, liquid gas has been supplied with pressure boiling carburetter, liquid gas is vaporizated into gas form in this carburetter, and it combines with the spontaneous evaporation air-flow again.
Patent documentation EP 1348620 A1 show a kind of gas supply equipment, and spontaneous evaporation gas wherein leads to compressor, and it improves the pressure of gas before giving consumer device by the feeding pipeline with the gas feeding.In addition, this equipment also includes forces the boiling carburetter, and in this carburetter, the liquid gas that is pressurized to elevated pressures in advance can be vaporized.In this equipment, after the pressure of spontaneous evaporation gas raises, force boiling gas partly to be combined to spontaneous evaporation gas.Yet some complicated systems needs the parallel gas feed system of main feed pipe from the cargo tank to gas of two covers.This kind equipment also needs more complicated control system.
Summary of the invention
The object of the present invention is to provide a kind of gas feeding apparatus of boats and ships, to solve the above-mentioned and other problem of prior art.Another object of the present invention is to,, can be feed pipe uniform pressure is provided, and provide failure-free gas to supply with for the consumer of boats and ships for the boats and ships with liquefied gas tank provide a kind of simple and reliable device and method.
The objective of the invention is roughly that logical the solution of the present invention realizes.Below will mainly the present invention be described in conjunction with a gas tank.But should be understood that boats and ships can have several gas tanks, each gas tank has independently gas feeding apparatus, the perhaps parallel connection of several gas tanks, a shared gas feeding apparatus.
According to the present invention, a kind of gas feeding apparatus of boats and ships is provided, these boats and ships are suitable for transport medium oxidizing gases in its gas tank, this gas tank has ullage space partial sum liquid phase part, described equipment provides gas to satisfy the demand of boats and ships, described equipment comprises: the gas supply pipe road, arrive consumer in order to the gas delivery that will produce in the gas tank; Pipeline, its liquid phase part from gas tank extends to the ullage space part, described pipeline is provided with at least one pump in order to gas is introduced into the ullage space part, described pipeline is provided with heat transfer unit, in order to influence the temperature of the gas of being introduced, it is characterized in that described pipeline is provided with the bypass pipe that passes through from the H Exch side, and described pipeline is provided with triple valve, in order to be controlled at the gas stream between H Exch and the bypass pipe.
The gas feeding apparatus of a kind of boats and ships of the present invention, it is suitable for transport medium oxidizing gases in its gas tank, and wherein gas tank has ullage space partial sum liquid phase part.According to the present invention, equipment provides gas to satisfy the demand of boats and ships, and this equipment comprises the gas supply pipe road, arrives consumer in order to the gas delivery that will form in the gas tank.Basic design of the present invention is that by being provided for phase transition phenomena particularly in the favorable environment of ullage space part and/or the phase transition phenomena more than the liquid phase part surface, oneself controllably vaporizes thereby make gas in gas tank.
According to a preferred embodiment, this equipment is provided with the pipeline that partly extends to ullage space from the liquid phase part of gas tank, and it is provided with at least one pump gas is incorporated into the ullage space part.This pipeline is provided with heat transfer unit, to influence the temperature of the gas of being introduced.This equipment just can produce the gaseous state gas of may command quantity according to the demand of boats and ships like this.Advantageously, this equipment is provided with first sensor, and it is applicable to the pressure of the ullage space part of measuring gas tank.This pipeline is provided with control cock, and with the flow of gas in the controlling plumbing fixtures, and first sensor is set to be communicated with control cock control.Like this, based on the pressure that the ullage space of gas tank is partly measured, just can control flow velocity by the gas of pipeline.
This heat transfer unit comprises H Exch.This H Exch is arranged in the pipeline, and gas can be flowed by it.This pipeline also is provided with bypass pipe and the triple valve that passes through from the H Exch next door, in order to be controlled at the gas stream between H Exch and the bypass pipe.Advantageously, this equipment is provided with second sensor, and it is applicable to the temperature of the ullage space part of measuring gas tank.This second sensor is set to be communicated with this triple valve control, like this, based on the main temperature of this ullage space part, can distribute the gas stream between H Exch and the bypass pipe.
According to the present invention, a kind of method that gas is provided in boats and ships also is provided, described boats and ships have liquefied gas tank and the gas consumption device that comprises ullage space partial sum liquid phase part, in this equipment, gas is vaporized in gas tank and is led to described consumer by the gas supply pipe road, and utilize first sensor roughly to measure pressure in the gas tank continuously, by to ullage space part steam ejection liquefaction gas controllably, control the speed of gas vaporization in the gas tank, it is characterized in that, control the flow velocity of the liquefied gas of injection based on the pressure survey of first sensor, and the temperature of the gas of described injection is based on and is provided as that the measured Temperature numerical of second sensor that partly is connected with the ullage space of gas tank controls.
A kind of boats and ships provided by the present invention gas methods is provided, wherein these boats and ships are provided with the liquefied gas tank that comprises ullage space partial sum liquid phase part, and the gas consumption device, gas is vaporized in gas tank and is led to this consumer by the gas supply pipe road.Utilize first sensor generally to measure pressure in the gas tank continuously simultaneously.By to ullage space part steam ejection liquefaction gas controllably, control the speed of gas vaporization in the gas tank, and control the flow velocity of the liquefied gas of injection based on the pressure survey of first sensor.Can be provided at the environment of the phase transition phenomena of ullage space part and/or liquid phase part surface like this, and control phase transformation based on the pressure survey of first sensor.
The temperature of the gas that sprays is based on that the measured Temperature numerical of second sensor that partly is connected with the ullage space of gas tank controls.
The present invention has following advantage.At first, desired number of components is minimum, and this makes it install easily simple and saves the space.Owing to adopted novel temperature control mode, the control that pressure and gaseous state gas produce is also very accurate.By the present invention, minimize by the degree that heavy hydrocarbon is vaporized from liquefied gas, also can provide more suitably gas for the running of gas engine.
Description of drawings
The invention will be further described below in conjunction with the signal accompanying drawing, wherein:
Fig. 1 shows an exemplary embodiments of gas feeding apparatus of the present invention.
The specific embodiment
Fig. 1 has schematically described the cross-sectional plane of boats and ships 6, for example liquefied natural gas oil tanker.These boats and ships 6 are suitable for transport medium oxidizing gases in its gas tank 4.Usually, can be provided with several gas tanks on the liquefied natural gas oil tanker, but only show among the figure that a gas tank 4 is so that clearly demonstrate.This gas tank 4 is filled to and makes it always have the ullage space part 4.1 of filling gas in gaseous form and the liquid phase part 4.2 of filling liquid oxidizing gases.In the storing process of liquefied gas, gas can be vaporized its phase of change and be transferred to ullage space part 4.1.The gas of vaporization can be utilized by the consumer 5 of boats and ships 6.This consumer 5 for example is the gas engine that propelling thrust is provided for boats and ships.Fig. 1 has only shown a consumer 5, but should be understood that, a plurality of such devices can be arranged.
These boats and ships 6 are provided with gas feeding apparatus 1, and it comprises the gas supply pipe road 2 with compressor unit 2.1.This gas supply pipe road 2 is that the ullage space part 4.1 from gas tank 4 extends to consumer 5.Other gas tanks (not shown) equally also correspondingly are connected to the inlet side of compressor unit 2.1.This gas supply pipe road 2 is set for the consumer 5 that the boil-off gas of vaporization is transported to boats and ships 6 from gas tank 4.Gas tank 4 keeps overvoltage condition a little.Gas supply pipe road 2 is provided with compressor unit 2.1 and keeps the pressure in the gas tank 4 to be in the level of being wanted, and the pressure of boil-off gas is brought up to enough levels use for consumer 5.Lower limit normally decides according to the demand as the gas engine of the boats and ships of consumer 5.Desired pressure level in the gas tank 4 utilizes compressor unit 2.1 to keep.Preferably utilize first device for pressure measurement 10 after the compressor be arranged on gas supply pipe road 2 and be arranged on second device for pressure measurement 10 ' before the compressor on gas supply pipe road 2 and realize control compressor unit 2.1.This compressor unit can be provided with the inlet vane control of some variation of permission capacity.If the pressure in the main feed pipe of gas (install 10 measured) reduction, the hypotony in the gas tank just need provide the replaceability scheme that can produce greater amount gas simultaneously.This will be described below.
In addition, also be provided with heat transfer unit 3.6 in the pipeline 3.1, can control the temperature of the gas of injection by this heat transfer unit.This heat transfer unit 3.6 has be arranged on the H Exch 3.7 that is positioned in the pipeline after the control cock 3.5 on gas flow direction, and gas can therefrom flow through and be heated.H Exch 3.7 is to be connected with heat transfer loop 3.8, is provided with in the heat transfer loop 3.8 as the water-ethylene glycol compound to be used for heated air to flow.Heat transfer loop 3.8 also can be connected to the temperature of second H Exch 2.3 with gas in the control gaseous feed pipe 2, and the 3rd H Exch 5.1 is in order to reclaim heat from consumer 5.Make in this way that surplus heat is effectively utilized in the consumer 5.Shown in the dotted line in the scheme drawing, this heat transfer circuit also can include other partial sum elements.
Pipeline 3.1 also can be provided with bypass pipe 3.10 in addition, and the water-ethylene glycol compound can be from this bypass pipe 3.10 by walking around H Exch 3.7.Bypass flow is by triple valve 3.9 controls, and this triple valve 3.9 is positioned in the pipeline 3.1 and is positioned on gas flow direction after the H Exch 3.7.Triple valve will carry out combination by H Exch 3.7 and the stream line by bypass pipe 3.10.This gas that connects for spraying by nozzle unit 3.4 provides the gas temperature controllable function.
At least two sensors that are connected with gas tank also are provided, and it is provided for the running of gas feeding apparatus 1.First sensor 3.3 is provided for measuring the pressure of the ullage space part 4.1 of gas tank 4, and second sensor 3.11 is provided for measuring the temperature of the ullage space part 4.1 of gas tank 4.
Basic design of the present invention is, by being provided for phase transition phenomena particularly in the favorable environment of ullage space part and/or the phase transition phenomena more than the liquid phase part surface, thereby in gas tank 4 bog controllably.It advantageously is achieved as follows described in the literary composition.Under the situation of the liquefied gas temperature of the liquid phase part that does not roughly improve gas tank, liquefied gas is incorporated into the ullage space part from liquid phase part.Temperature in ullage space part 4.1 will be higher than the liquefied gas temperature, and this fact controllably is used for the vaporization of control gaseous in the present invention.
When the quantity not sufficient of spontaneous evaporation gas during, just need other boil-off gas with feeding consumer 5.According to the present invention, to ullage space part 4.1 steam ejection liquefaction gases, can obtain the more gas of vaporizing and producing than naturally by controllably.The actuator of valve 3.5 is that the pressure value that utilizes first sensor 3.3 to obtain is controlled.Increase if pass through the consumption of the gas on gas supply pipe road 2, then the pressure of ullage space part will reduce, and based on the measurement of first sensor 3.3, control system (not shown) is noted it.Control system increases its degree of opening driving valve 3.5 subsequently, thereby the flow velocity of jet gas is improved.Nature, pump 3.2 also turns round.The stream mode of jet gas perhaps may even be vaporific for making drop very little.Because the temperature of ullage space part will be higher than the temperature of liquefied gas, the gas that a part is sprayed will be vaporized, thus the decline of the pressure of the consumption of compensation gas and ullage space part.This just provides the favorable environment that is used at ullage space part and/or the phase transition phenomena more than the liquid phase part surface.According to the present invention, in this way, the stress level of ullage space part 4.1 remains on the level of expection, and has produced the additional gas that derives from liquefied gas.
The vaporization of gas requires the expenditure of energy, and the temperature of gas when vaporization ullage space part therefore trend reduce.Based on the measurement of second sensor 3.11, control system (not shown) is noted the temperature of ullage space part 4.1.Now control system will drive triple valve 3.9, make more gases through over-heat-exchanger 3.7 and make the gas heating of injection.This makes that the heat consumption of vaporescence of gas is less.According to the present invention, the temperature of the gas of injection remains on approximately subzero 130 ℃.Gas remains on about this temperature and helps to make by this way gas fractionation, promptly probably has only nitrogen and methane to vaporize.The heavier hydro-carbon that is comprised in the liquefied gas will remain on liquid phase and get back in the liquid phase part 4.2 of gas tank 4.
For ballast conditions, between at least two gas tanks (not shown), connection can be arranged, so that liquefied gas is transferred to another gas tank from a gas tank.Also can make the gas tank complete filling and sailing in ballast.
For the situation when consumer 5 is in underload, thermal oxidizer 11 can be installed.Purpose is when the boil-off gas that results from gas tank during more than consumption, all superfluous boil-off gas of burning in thermal oxidizer 11.For ease of clearly demonstrating, the control dependency among Fig. 1 is done to show briefly by dotted line.Yet, should be understood that control system can have different embodiments, comprise and utilize centralized or distributed control convenience.
The invention is not restricted to the above-mentioned embodiment that represents, several change schemes of the present invention can be expected in accompanying Claim book scope.
Claims (5)
1. the gas feeding apparatus (1) of boats and ships (6), these boats and ships are suitable for transport medium oxidizing gases in its gas tank (4), this gas tank has ullage space part (4.1) and liquid phase part (4.2), and described equipment provides gas to satisfy the demand of boats and ships, and described equipment comprises:
Consumer (5) is arrived in order to the gas delivery that will produce in the gas tank in gas supply pipe road (2);
Pipeline (3.1), its liquid phase part from gas tank (4) (4.2) extend to ullage space part (4.1),
Described pipeline (3.1) is provided with at least one pump (3.2) in order to gas being introduced into the ullage space part,
Described pipeline (3.1) is provided with heat transfer unit (3.6), in order to the temperature of the gas introduced of influence,
It is characterized in that,
Described pipeline (3.1) is provided with the bypass pipe (3.10) that passes through from H Exch (3.7) side, and
Described pipeline (3.1) is provided with triple valve (3.9), in order to be controlled at the gas stream between H Exch (3.7) and the bypass pipe (3.10).
2. the gas feeding apparatus (1) of boats and ships as claimed in claim 1 (6), it is characterized in that, described device is provided with first sensor (3.3), it is suitable for measuring the pressure of the ullage space part (4.1) of gas tank (4), and described pipeline is provided with control cock (3.5), and described first sensor (3.3) is set to be communicated with described control cock (3.5) control.
3. the gas feeding apparatus (1) of boats and ships as claimed in claim 2 (6), it is characterized in that, described equipment is provided with second sensor (3.11), it is suitable for measuring the temperature of the ullage space part (4.1) of gas tank (4), and described second sensor (3.11) is set to be communicated with described triple valve (3.9) control.
4. method that gas is provided in boats and ships (6), described boats and ships have liquefied gas tank (4) and the gas consumption device (5) that comprises ullage space part (4.1) and liquid phase part (4.2),
In this equipment, gas is vaporized in gas tank (4) and is led to described consumer (5) by gas supply pipe road (2), and utilizes first sensor (3.3) roughly to measure pressure in the gas tank (4) continuously,
By to ullage space part steam ejection liquefaction gas controllably, control the speed of gas vaporization in the gas tank (4),
It is characterized in that,
Control the flow velocity of the liquefied gas of injection based on the pressure survey of first sensor (3.3), and
The temperature of the gas of described injection (3.4) is based on and is provided as that the measured Temperature numerical of second sensor (3.11) that is connected with the ullage space of gas tank (4) part (4.1) controls.
5. the method that gas is provided in boats and ships (6) as claimed in claim 4 is characterized in that, the boil-off rate of described gas is to control by the temperature of the gas of control injection.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI20045081A FI118681B (en) | 2004-03-17 | 2004-03-17 | Gas supply arrangement for a watercraft and method for producing gas in a watercraft |
| FI20045081 | 2004-03-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1934002A CN1934002A (en) | 2007-03-21 |
| CN100460280C true CN100460280C (en) | 2009-02-11 |
Family
ID=32039509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005800084504A Expired - Fee Related CN100460280C (en) | 2004-03-17 | 2005-03-10 | Gas supply arrangement of a marine vessel and method of providing gas in a marine vessel |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US7438012B2 (en) |
| EP (1) | EP1725448B1 (en) |
| JP (1) | JP4843602B2 (en) |
| KR (1) | KR101130383B1 (en) |
| CN (1) | CN100460280C (en) |
| AT (1) | ATE464229T1 (en) |
| DE (1) | DE602005020597D1 (en) |
| FI (1) | FI118681B (en) |
| NO (1) | NO337027B1 (en) |
| WO (1) | WO2005087586A1 (en) |
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| GB0120661D0 (en) * | 2001-08-24 | 2001-10-17 | Cryostar France Sa | Natural gas supply apparatus |
-
2004
- 2004-03-17 FI FI20045081A patent/FI118681B/en not_active IP Right Cessation
-
2005
- 2005-03-10 CN CNB2005800084504A patent/CN100460280C/en not_active Expired - Fee Related
- 2005-03-10 US US10/598,949 patent/US7438012B2/en active Active
- 2005-03-10 EP EP05717325A patent/EP1725448B1/en active Active
- 2005-03-10 WO PCT/FI2005/050072 patent/WO2005087586A1/en active Application Filing
- 2005-03-10 JP JP2007503363A patent/JP4843602B2/en not_active Expired - Fee Related
- 2005-03-10 KR KR1020067019011A patent/KR101130383B1/en active IP Right Grant
- 2005-03-10 AT AT05717325T patent/ATE464229T1/en not_active IP Right Cessation
- 2005-03-10 DE DE602005020597T patent/DE602005020597D1/en active Active
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2006
- 2006-10-16 NO NO20064683A patent/NO337027B1/en not_active IP Right Cessation
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5590535A (en) * | 1995-11-13 | 1997-01-07 | Chicago Bridge & Iron Technical Services Company | Process and apparatus for conditioning cryogenic fuel to establish a selected equilibrium pressure |
| JP2002022096A (en) * | 2000-07-04 | 2002-01-23 | Yazaki Corp | Liquefied gas feeding tank |
| EP1348620A1 (en) * | 2002-03-26 | 2003-10-01 | Alstom | Arrangement for supplying gaseous fuel to a power plant in a LNG ship |
Also Published As
| Publication number | Publication date |
|---|---|
| FI20045081A0 (en) | 2004-03-17 |
| US7438012B2 (en) | 2008-10-21 |
| KR20060124759A (en) | 2006-12-05 |
| JP4843602B2 (en) | 2011-12-21 |
| DE602005020597D1 (en) | 2010-05-27 |
| NO20064683L (en) | 2006-10-16 |
| WO2005087586A1 (en) | 2005-09-22 |
| FI118681B (en) | 2008-02-15 |
| JP2007529359A (en) | 2007-10-25 |
| NO337027B1 (en) | 2016-01-04 |
| CN1934002A (en) | 2007-03-21 |
| FI20045081A (en) | 2005-09-18 |
| KR101130383B1 (en) | 2012-03-28 |
| US20070199496A1 (en) | 2007-08-30 |
| EP1725448B1 (en) | 2010-04-14 |
| EP1725448A1 (en) | 2006-11-29 |
| ATE464229T1 (en) | 2010-04-15 |
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